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is secured, E, a needle, F, which clamp is held in position which is arranged vertically,

ATENT y s IMPRovEMEN-rin sEwlNG-MACHINESL- A Specication forming part of Letters PatentNo. 146,502, dated J Linuary 20, 1874; application lcd s cpiember 13, 181s.

To all whom it may concern: Y

Beit known that I, JOHN H. APPLEGA'PE, of the city and county of Philadelphia, and the State of Pennsylvania, have invented a new and useful Improvement in Sewing-Machines, and Ido hereby declare the following to be a clear and exact description of the na-l y a portion thereof. Fig. 5 is a top view of a detached part.'

Similar letters of reference indicate correspending parts in the several figures.

This invention relates to mechanism for sewing two or `more rows; and consists in means for holding "the stationary needle to the bar and permitting the removal thereof when required. It also consists in means for holding the adjustable needle to the slide on the needle-bar and permitting the removal thereof whenrequired. It also consists in'a sliding throat-plate, which is fitted in an opening inthe stationary throat-plate, and a setscrew for holding the former. It also consists in the construction of the feed to permit the adjustment of the shuttles without disturbing the feed. It finally consists in the construction of the tension.

Referring to the drawings, A represents the table; B, the needlebar, and C the arm supporting said bar, all of which may be of well-known form and construction. To the lower endof the needle-bar U is hinged a clamp, D,to which by a set-screw or other fastening,

on the needle-bar by a button, G, swiveled to the needle-bar below the clamp, and adapted to be moved off and on the clamp when the needle is to be rendered inoperative or required for use. H represents another needle, parallel with the needle F, and is secured to a clamp or head, J, hinged to a sliding bar, K, which is fitted to the lower portion of the needle-bar. A setserew or other fastening, L, secures the needle to the clamp J, and a stirrup, M, is hinged to the clamp, a-nd adapted to engage with a projection, has a lateral motion,

be swung transversely, so as to be rendered G, the clamp 1) of the needle F may be released, and said needle moved transversely, so as not to descend and form a stitch-ouin other words, toberendered inoperative similarly to the needle H. (See Fig. 3.) These movements willbe found useful wherein, after sewing two rows of stitches,it may be'desired to form a single row, and the position of such row will determine which needle can beeinployed most advantageously. When two rows are to be stitched, the two `needles are secured in position by the button and stirrup, respect ively. the distance between them may be increased or diminished by moving the slide K,so, as to bring the needle H nearer to or farther from the needle F, and when thus properly adj usted, the slide may be held in place by a setscrew, l?, which passes through the needle-bar and bears against the slide.

a throat-plate which slides longitudinally on the plate Q, so that said plate R may be moved plate Q, and thus adjust the distances between the throats relatively to the adjustment of the two needles F H. The plate It will `be held in position by a setscrew, It', properly applied. The feedplate Y and horizontal Vportion of the overhanging plateZ will be of thickness less than the thickness of the clothplate orthroatplate,

Y and horizontal portion of the plate Zwill never descend lower than the under faceof the cloth or throat plate, whereby the adjustable shuttle cannot strike the plate Y, or adjacent portions of the plate Z. The shuttle for the needle F will be arranged and operate as usually, the race` being shown at S. i The shuttle for the needle H has its carrier -T Prien.

N, o n the slide K. 'yhis stirrup and by movingit in the direction shown by the dotted lines, Fig. 1the'` clamp J is released, and the needle H may then inoperative. By properly rotatiu g thefbutton` When it is desired to sew two rows,-

Q represents the stationary throat-plate for the needle F, and R nearer to and farther from the throat of the and the cam which operates the bar Z will be so gaged or adjusted that the plate mounted on a longitudinally-adjustable race, U, and is attached to the under side of the table A by screws V, which pass through slots a in the race, and permit the longitudinal adjustment'thereof, whereby the shuttles may be adjusted relatively to the distancesbetween the needles F H. Motion is imparted to both shuttles by means of a forked lever, W, whose forked ends are jointed to arms X X', which are, respectively, jointed to the shuttle-carriers. The shuttle-carriers are connected, by links or arms X X', with the forks of the lever W, and the position of the race U may be adjusted or changed, and the arm X will at all times impart proper movements to the carrier, Whether the shuttles are adjusted for wide or narrow spaces betweenv the stitches. Y represents the feed-plate, which is attached to a plate, Z, projecting laterally from the feed-bar Z', and overhanging the adjustable shuttle-race U, so that the movements of the latter may be made toward or from the stationary race S, without in any manner disturbing the feed plate and bar, or interfering,` therewith. v

When the various adjustments are com pleted, the sewing may take place, the operation of which is similar to that practiced in single-needle machines. Aplurality of stitches may be made by increasing the number of needles, throat-plates, shuttles, 81e., and rendering them adjustable.

The tension device consists of a rod, A', whose upper end is threaded and iiattened, as at b, and on the rod is placed a fixed disk, o, a washer composed of a piece of cloth, felt, or other fabric, d, a disk, e, with spurs f and the spool g, into the lower side of which penetrates the spurs f of the disk e. Another disk, h,

with spurs j, is then laid on the spool, and the spurs penetrate the upper side of the spool.

`A felt or other washer, 7s, is pla-ced on the disk 'compressed by the action of the nut m, and

thus tightened against the spurred disks e h, the friction between the fabric and adjacent disk may be nicelyr regulated, andthe tension, consequently, adjusted. 1

Having thus described my invention, what I claim as new, and desire to secure by Letters l. The clamp D, holding 011e needle and hinged to the needle-bar, in combination with the button G, substantially as and for the purpose set forth.

2. The clamp J, holdin g one needle and hinged to the slide K of the needle-bar, in combination with the stirrup M, substantially as and for the purpose set forth.

3. The stationary throat-plate Q, in combination with the throat-plate R, sliding in an opening in said plate Q, andthe set-screw R', substantially as and for the purpose 'set forth.

4. The feed-plate Y, attached to a plate, Z, projecting' laterally from the feed-bar Z', and overhanging,` the race of the adjustableshuttle, substantiallyl as and for the purpose set forth.

5. The screw A', with flat-tened top b, the iiXed disks c l, spurred disks e h, and washers d 7c, combined and operating,1 substantially as and for the purpose set forth.

JOHN H. APPLEGATE.

Witnesses: y

J No. A. BELL, MILLARD F. WTALTON, 'JOHN A. VVIEDERSHEIM. 

